GARY SMITH stepped off the bench and secured victory for MK Dons within 60 seconds.

The midfielder went on a storming run before shooting low into the net to send the visitors into the hat.

Dons had taken a first-half lead when Izale McLeod converted from the spot after being brought down by Spencer Prior, but Southend, who hit the woodwork twice, equalised via Freddy Eastwood's 25-yard shot.